i have a modified 350 small block. It has a mild cam, and a few other mods, nothing special. tomorrow im going to buy a compression gauge so that i can adjust my valves and get all the right compression that i want. Someone told me that i should run a compression of 9:1. Does that sound right? I want the best performance for my engine. Another thing is i dont really know how to use a compression gauge to do this. Can somoeone tell me the steps taken for this project? Im planning on doing this on Sunday.